Respuesta :

jmaran

Answer:

yep your answer was correct

Step-by-step explanation:all you gotta do is divide the area of the smaller one and that is 12 so you multiply 12 by 20 witch is 240

Answer:

800 cm²

Step-by-step explanation:

Given similar figures with ratio of sides = a : b

Then ratio of areas = a² : b²

Here ratio of sides = 20 : 6 = 10 : 3, thus

ratio of areas = 10² : 3² = 100 : 9 = [tex]\frac{100}{9}[/tex], thus

area of Δ DEF = [tex]\frac{100}{9}[/tex] × 72 = 100 × 8 = 800 cm²